1. Bulk relaxor ferroelectric ceramics as a working body for an electrocaloric cooling device
- Author
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Brigita Rožič, Uroš Plaznik, Barbara Malič, Silvo Drnovšek, Marko Vrabelj, Jena Cilenšek, Zdravko Kutnjak, Andrej Kitanovski, Alojz Poredoš, and Hana Uršič
- Subjects
aktivni elektrokalorični regeneratorji ,masivna relaksorska feroelektrična keramika ,Materials science ,Physics and Astronomy (miscellaneous) ,business.industry ,Ferroelectric ceramics ,active electrocaloric regenerators ,Pyroelectricity ,bulk relaxor ferroelectric ceramics ,Experimental testing ,visual_art ,Regenerative heat exchanger ,visual_art.visual_art_medium ,Electrocaloric effect ,udc:621.565(045) ,electrocaloric cooling devices ,Ceramic ,elektrokalorična hladilne naprave ,Composite material ,business ,Thermal energy ,Relaxor ferroelectric - Abstract
The electrocaloric effect (ECE), i.e., the conversion of the electric into the thermal energy has recently become of great importance for development of a new generation of cooling technologies. Here, we explore utilization of [Pb(Mg1∕3Nb2∕3)O3]0.9[PbTiO3]0.1 (PMN-10PT) relaxor ceramics as active elements of the heat regenerator in an ECE cooling device. We show that the PMN-10PT relaxor ceramic exhibits a relatively large electrocaloric change of temperature ΔTEC > 1 K at room temperature. The experimental testing of the cooling device demonstrates the efficient regeneration and establishment of the temperature span between the hot and the cold sides of the regenerator, exceeding several times the ΔTEC within a single PMN-10PT ceramic plate.
- Published
- 2021